The quality parameter does not work for PNG file output

[paulofloresjunior]

Describe the bug
We are not able to use quality parameter to generate png file.
It does not work when we consume a png passing quality filter or when we consume webp or jpg file and try to generate png file with quality parameter.

To Reproduce
Any of link below returns same file:
https://i.cinemaja.com.br/filters:quality(10)/1013/background/8751.png
https://i.cinemaja.com.br/filters:quality(50)/1013/background/8751.png
https://i.cinemaja.com.br/filters:quality(90)/1013/background/8751.png

Or converting from other format to png with compression like this:
https://i.cinemaja.com.br/filters:format(png)/filters:quality(10)/1013/backgrounds/8920.jpg
https://i.cinemaja.com.br/filters:format(png)/filters:quality(50)/1013/backgrounds/8920.jpg
https://i.cinemaja.com.br/filters:format(png)/filters:quality(90)/1013/backgrounds/8920.jpg

Expected behavior
All returns from these url should respect the quality parameter and compress the PNG final image.

Please complete the following information about the solution:

• Version: v6.0.0
• Region: us-east-1
• Was published using automated deployment in aws cloud formation about 1 month ago.
• Error from cloudwatch:
  2022-04-18T20:23:13.341Z a9c3335f-551c-43af-9ab2-efb523626d20 ERROR ImageHandlerError: The image request you provided could not be decoded. Please check that your request is base64 encoded properly and refer to the documentation for additional guidance.
  at ImageRequest.decodeRequest (/var/task/image-handler/image-request.js:293:23)
  at ImageRequest.parseRequestType (/var/task/image-handler/image-request.js:241:18)
  at ImageRequest. (/var/task/image-handler/image-request.js:33:53)
  at Generator.next ()
  at fulfilled (/var/task/image-handler/image-request.js:7:58) {
  status: 400,
  code: 'DecodeRequest::CannotDecodeRequest'
  }

[fisenkodv]

@paulofloresjunior thank you for your feedback. We will look into it and add it to our backlog.

[github-actions]

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[paulofloresjunior]

Hello, any news?

[dougtoppin]

We are currently reviewing this and will update with more detail shortly.

[dougtoppin]

@paulofloresjunior using the current v6.1.0 release made today I tried requests for a png image using quality values of 10, 50, and 90. Each returned different file size values for the quality setting which I am assuming are correct.

I then tried the jpg to png conversion and it worked as expected.

Can you deploy the new version in a test configuration and retry your test cases and let us know if there is still an issue?

[paulofloresjunior]

Hi @dougtoppin thanks! I will try for sure and will bring the results here.

[github-actions]

This issue has not received a response in a while. If you want to keep this issue open, please leave a comment below and auto-close will be canceled.

[paulofloresjunior]

Hi, I already tested here and the problem was solved in this latest version! Thank you very much!